This heavy-duty side bracket is a great choice for mounting the upper unit atop the base unit of your 20th century Sellers, or other Hoosier-style cabinet. It provides the clearance needed to allow the enameled work top to easily slide in-and-out between the sections. Constructed of heavy-gauge steel, it's designed for lasting quality and performance. Note: the vertical clearance denotes the space between the two units, while the side clearance denotes the distance a work-top can exceed the cabinet's side.